Centuries: 19th century - 20th century - 21st century
Decades: 1860s - 1870s - 1880s - 1890s - 1900s - 1910s - 1920s - 1930s - 1940s - 1950s years - 1960s
Years: 1912 - 1913 - 1914 - 1915 - 1916 - 1917 - 1918 - 1919 - 1920 - 1921 - 1922
January 4 - II. Russian Tsar Nicholas authorizes Czech and Slovak officers to fight for their nation under the Russian flag.
9 January - The German Crown Council, yielding to political and military pressure, re-authorizes the continuation of the unrestricted submarine war against Chancellor Theobald von Bethmann-Hollweg.
January 12 - The Entente's response to the Wilson call.
January 13 - Train disaster in Zurea
January 17 - A volunteer Czech military unit is organized in Italy.
January 22 - Wilson's speech in the Senate on the formation of the League of Nations.
January 31 - Germany and Austria-Hungary declare unrestricted submarine war.
February 1 - A majority of the Reichstag votes to continue the unrestricted submarine war.
February 3 - The United States severes diplomatic relations with Germany.
February 11 - Ethiopian Empress Zauditu is crowned Emperor of Ethiopia in Addis Ababa.
March 5 - The central authorities sign the Preliminary Peace Treaty with Romania.
March 8 - Demonstration of women in Russia for bread and peace.
March 9 - The Croatian Sabor (Parliament) declares its loyalty to the Habsburg House, but calls for a separate, unified South Slavic state within the Monarchy.
March 10 - The February Revolution breaks out in Russia (on February 27, according to the Julian calendar).
March 14 - The Petrograd Soviet of Workers 'and Soldiers' Deputies issues a statement on the Polish issue and a "For the Polish Nation." Declaration recognizes that Poland "has the right to full independence".
March 15 - II. Resignation of Tsar Nicholas (according to the Julian calendar on March 2).
March 24 - The Provisional Russian Government approves the regulations of the Czechoslovak Legions in Russia.
April 2 - US President Thomas Woodrow Wilson delivers a high-impact speech in Congress. (He emphasized in his speech that “truth is more important than peace” and that security is needed for democracy worldwide.)
April 6 - The United States enters World War II on the side of the Entente. (After a convincing majority vote in Congress, war was officially declared for Germany, and for the Austro-Hungarian Monarchy only in December.)
April 9 - Failed attack by Entente troops at Arras. (April 12 in Champagne-Ardenne, April 16 at the river Aisne.)
April 26 - In Prostějov, Moravia, the army dispels the starvation demonstrations of 8,000 garment workers. (28 dead, more than 40 wounded remained at the scene.)
Beginning of the 10th Battle of Isonzo. (The fighting will run until June 5.)
The Russian Duma decides to continue the war.
The third Battle of Otranto, led by Captain Miklós Horthy to eliminate the Antantean lock. (This clash was the most significant battle of the Adriatic war.)
The French commander-in-chief will be Pétain, the chief of staff will be General Foch.
May 16 - Nándor Rott is appointed to the episcopal office of Veszprém.
May 21 - Fire in Gyöngyös.
May 23 - Resignation of Prime Minister István Tisza.
The Reichsrat in Vienna, the Austrian parliament, reopens. (The Czech Association issues a so-called declaration of state law